BAC TrilliumSeries DFCV Series, Rigging And Installation Instructions

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2. Turn the main power switch Q0 (and the “Start” button of the general contactor relay if ordered as option) “on” to
power the inverter; its LCP (Local Control Panel) is energised. Turn powerswitch QBO to position I, and the
fans are powered by the inverter (in position “II” the fans are powered directly from the mains, bypassing the
inverter). Note: When inverter is bypassed by switch QBO, the fan motors should be started gradually by
turning switches F1, F2, F3 etc. one by one. Place the main fuses FA1, FA2, FA3 to the “on” position. The
amber indicating lamp on the front panel lights up. Put the circuit breakers F1, F2, F3 etc.in the “on” position.
3. MANUAL INVERTER OPERATION: by pressing “HAND ON” on the inverter’s LCP, the fans start at the
minimum rpm at which the inverter was programmed. By pressing arrow key “↑” on the LCP, the maximum
programmed rpm can be reached and by pressing arrow key “↓“ the rpm can be reduced to the
minimumprogrammed rpm. At this stage the fans’ rpm are not regulated by any control device. Check the fan
rotation (all fans are factorywired to run in the same direction). Change phases if necessary to obtain correct
fan rotation, as shown by arrow on the fan cowl.
4. By pressing key “OFF” the inverter stops the fan operation.
5. AUTOMATIC OPERATION: turn on electric solenoid valve switch DV to activate the solenoid valves DVW in
position A (automatic operation) and press “Auto/Start” on the inverter’s LCP. Makesure that all the necessary
temperature probes are properly installed and wired. For detailed starting instructions please refer to the
“TrilliumSeries Operating and Maintenance Instructions, section Operating instructions, subsection Operating
instructions for digital controller”.
6. The unit will now operate according to the load demand. When the inverter reaches it's maximum fan speed it
will energize the adiabatic system. The two sides of the pre-cooler are controlled in sequence by the controller,
by energising/de-energising the appropriate solenoïd valves.
EMERGENCY STOP
A red mushroom switch S
0
S
1
on the front panel is provided to allow the unit emergency stop in case of
malfunction. The unit can be re-started by rotating the
S
0
S
1
emergency switch, as shown by its arrow and then following the starting procedure of the unit.
WEEK-END OR TEMPORARY SHUTDOWN
The unit must be shutdown by the inverter's "ON/OFF" variable on the digital controller either locally or through the
BMS system. Another option is to use the dry contact wired between Y6:1 and Y6:3 (contact is not factory
supplied and not wired).
This procedure will ensure that the drain valves VD1 and VD2 will remain open and the city valves VH1 and VH2
closed.
If the unit is shut down by the main power switch, all the valves will close, risking stagnant water in the
copper tubes.
W W W . B A L T I M O R E A I R C O I L . E U
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